init

bin/driver-random.py

@@ -0,0 +1,43 @@
+#!/usr/bin/python
+
+import sys
+from optparse import OptionParser
+
+import numpy as np
+import scipy.spatial
+
+from grid import simple_random_grid, exact_func
+import baker
+
+def rms(errors):
+  r = 0.0
+  for i in errors:
+    r += np.power(i, 2)
+  r = np.sqrt(r / len(errors))
+  return r
+
+if __name__ == '__main__':
+  parser = OptionParser()
+  parser.add_option("-o", "--output-file",      dest="output",           type='str', default = '/tmp/for_qhull.txt',       help = "qhull output file")
+  parser.add_option("-e", "--extra-points",     dest="extra",            type='int', default = 3,       help = "how many extra points")
+  parser.add_option("-s", "--source-total",     dest="source_total",     type='int', default = 100,     help = "total number of source points")
+  parser.add_option("-d", "--destination-total",dest="destination_total",type='int', default = 100,     help = "total number of destination points")
+  parser.add_option("-v", "--verbose", action = 'store_true', default = False, help = "verbosity")
+
+  (options, args) = parser.parse_args()
+  print >> sys.stderr, options
+
+  mesh_source = simple_random_grid(options.source_total)
+  tree = scipy.spatial.KDTree(mesh_source.points)
+  mesh_dest   = simple_random_grid(options.destination_total)
+
+  open(options.output, 'w').write(mesh_source.for_qhull())
+  print >> sys.stderr, "wrote output to %s" % options.output
+
+  errors = []
+  for x in mesh_dest.points:
+    (final, exact) = baker.run_baker(x, mesh_source, tree, options.extra, options.verbose)
+    cur_error = np.abs(final - exact)
+    errors.append(cur_error)
+
+  print rms(errors)

bin/driver-structured.py

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+#!/usr/bin/python
+
+import sys
+from optparse import OptionParser
+
+import numpy as np
+import scipy.spatial
+
+from grid import simple_rect_grid, exact_func
+import baker
+from tools import rms
+
+
+if __name__ == '__main__':
+  parser = OptionParser()
+  parser.add_option("-e", "--extra-points",   dest="extra",   type='int',  default = 3,      help = "how many extra points")
+  parser.add_option("-s", "--source-density", dest="source",  type='int',  default = 11,     help = "resolution of source mesh")
+  parser.add_option("-d", "--dest-density",   dest="dest",    type='int',  default = 11,     help = "resolution of dest mesh")
+  parser.add_option("-t", "--random-total",   dest="random_total",    type='int',  default = 100,     help = "total number of random points")
+  parser.add_option("-r", "--random-dest", action = 'store_true', default = False, help = "verbosity")
+  parser.add_option("-v", "--verbose", action = 'store_true', default = False, help = "verbosity")
+
+  (options, args) = parser.parse_args()
+  print >> sys.stderr, options
+
+  mesh_source = simple_rect_grid(options.source, options.source)
+  tree = scipy.spatial.KDTree(mesh_source.points)
+
+  mesh_dest   = simple_rect_grid(options.dest, options.dest)
+
+  if options.random_dest:
+    x = []
+    for i in xrange(options.random_total):
+      rx = np.random.rand() * 2 - 1
+      ry = np.random.rand() * 2 - 1
+      x.append([rx, ry])
+    mesh_dest.points = np.array(x)
+
+  errors = []
+  for x in mesh_dest.points:
+    (final, exact) = baker.run_baker(x, mesh_source, tree, options.extra, options.verbose)
+    cur_error = np.abs(final - exact)
+    errors.append(cur_error)
+
+  print rms(errors)

bin/generate_qhull.pl

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+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+my $output_filename = $ARGV[0] or die "no args";
+my $tmp_grid_file   = "$output_filename.grid.txt";
+
+system("grid.py > $tmp_grid_file");
+
+
+system("cat $tmp_grid_file | qdelaunay  GD2 s > $output_filename.txt\n"       );
+system("cat $tmp_grid_file | qdelaunay GD2 s Qt > ${output_filename}_qt.txt\n");
+system("cat $tmp_grid_file | qdelaunay GD2 s QJ > ${output_filename}_qj.txt\n");
+
+unlink($tmp_grid_file);